# Php retrieves the entire function floor (), round (), intval (), ceil ()

Source: Internet
Author: User
Tags rounds
Ceil -- returns an integer equal to or greater than value if floatceil (floatvalue) is an integer. If the value contains a decimal part, it is a single digit. The type returned by ceil () is still float, because the float value range is usually larger than integer. Example 1. ceil () of the PHP function? Phpechoceil (4.3); 5e

Ceil -- returns an integer equal to or greater than the value if float ceil (float value) is an integer. If the value has a decimal part, it is a single digit. The type returned by ceil () is still float, because the float value range is usually larger than integer. Example 1. ceil () of the PHP function? Php echoceil (4.3); // 5 e

Ceil -- integer in a single method
Description
Float ceil (float value)
Returns the next integer of no less than value. If the value has a decimal part, it is entered in one place. The type returned by ceil () is still float, because the float value range is usually larger than integer.

Example 1. ceil () of the PHP function

1. <? Php
2. Echo ceil (4.3); // 5
3. Echo ceil (9.999); // 10
4. ?>

Floor -- rounding to get an integer
Description
Float floor (float value)
Returns the next integer not greater than value and rounds the decimal part of value. The return type of floor () is still float, because the float value range is usually larger than that of integer.

Example 1. floor () Example

1. <? Php
2. Echo floor (4.3); // 4
3. Echo floor (9.999); // 9
4. ?>

Round -- rounds a floating point number
Description
Float round (float val [, int precision])
Returns the result of rounding val by the specified precision (number of digits after decimal point. Precision can also be negative or zero (default ).

Example 1. round ()

1. <? Php
2. Echo round (3.4); // 3
3. Echo round (3.5); // 4
4. Echo round (3.6); // 4
5. Echo round (3.6, 0); // 4
6. Echo round (1.95583, 2); // 1.96
7. Echo round (1241757,-3); // 1242000
8. Echo round (5.045, 2); // 5.05
9. Echo round (5.055, 2); // 5.06
10. ?>

Intval --- convert a variable to an integer type

Example of using the entire function in PHP: intval ()

1. <? Php
2. Echo intval (4.3); // 4
3. Echo intval (4.6); // 4
4. ?>
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